/*********************************************************************
 * Copyright (C) 2002 Andrew Khan
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.read.biff;

import jxl.biff.IntegerHelper;
import jxl.biff.RecordData;
import jxl.common.Logger;

/**
 * Contains an array of Blank, formatted cells
 */
class MulBlankRecord extends RecordData {
    /**
     * The logger
     */
    private static Logger logger = Logger.getLogger(MulBlankRecord.class);

    /**
     * The row  containing these numbers
     */
    private int row;
    /**
     * The first column these rk number occur on
     */
    private int colFirst;
    /**
     * The last column these blank numbers occur on
     */
    private int colLast;
    /**
     * The number of blank numbers contained in this record
     */
    private int numblanks;
    /**
     * The array of xf indices
     */
    private int[] xfIndices;

    /**
     * Constructs the blank records from the raw data
     *
     * @param t the raw data
     */
    public MulBlankRecord(Record t) {
        super(t);
        byte[] data = getRecord().getData();
        int length = getRecord().getLength();
        row = IntegerHelper.getInt(data[0], data[1]);
        colFirst = IntegerHelper.getInt(data[2], data[3]);
        colLast = IntegerHelper.getInt(data[length - 2], data[length - 1]);
        numblanks = colLast - colFirst + 1;
        xfIndices = new int[numblanks];

        readBlanks(data);
    }

    /**
     * Reads the blanks from the raw data
     *
     * @param data the raw data
     */
    private void readBlanks(byte[] data) {
        int pos = 4;
        for (int i = 0; i < numblanks; i++) {
            xfIndices[i] = IntegerHelper.getInt(data[pos], data[pos + 1]);
            pos += 2;
        }
    }

    /**
     * Accessor for the row
     *
     * @return the row of containing these blank numbers
     */
    public int getRow() {
        return row;
    }

    /**
     * The first column containing the blank numbers
     *
     * @return the first column
     */
    public int getFirstColumn() {
        return colFirst;
    }

    /**
     * Accessor for the number of blank values
     *
     * @return the number of blank values
     */
    public int getNumberOfColumns() {
        return numblanks;
    }

    /**
     * Return a specific formatting index
     * @param index the cell index in the group
     * @return the formatting index
     */
    public int getXFIndex(int index) {
        return xfIndices[index];
    }
}




